Boil the macaroni. Strain and set aside.
Melt the butter in a deep pot.
Saute the onion and pimento until the onions are translucent and the pimento is cooked.
Remove the pot from the flame and mix in the flour.
Pour in the coconut milk. Return the pot to heat and stir constantly.
Cook until thick. Set aside.
Add the ketchup and mustard to the macaroni then the rest of the ingredients.
Add the coconut milk sauce and 2 cups of cheese. Mix well. Pour the mixture into a well greased baking dish.
Top with the remaining cup of cheese.
Preheat oven at 400 degrees F then bake at 350 degrees F for about 30 mins
or until golden and the macaroni has absorbed the oil (from the cheese).